Van Stan Jarrad H, Mehta Daryush D, Sternad Dagmar, Petit Robert, Hillman Robert E
Massachusetts General Hospital, BostonMGH Institute of Health Professions, Boston, MAHarvard Medical School, Boston, MA.
Northeastern University, Boston, MA.
J Speech Lang Hear Res. 2017 Apr 14;60(4):853-864. doi: 10.1044/2016_JSLHR-S-16-0164.
Ambulatory voice biofeedback has the potential to significantly improve voice therapy effectiveness by targeting carryover of desired behaviors outside the therapy session (i.e., retention). This study applies motor learning concepts (reduced frequency and delayed, summary feedback) that demonstrate increased retention to ambulatory voice monitoring for training nurses to talk softer during work hours.
Forty-eight nurses with normal voices wore the Voice Health Monitor (Mehta, Zañartu, Feng, Cheyne, & Hillman, 2012) for 6 days: 3 baseline days, 1 biofeedback day, 1 short-term retention day, and 1 long-term retention day. Participants were block-randomized into 3 different biofeedback groups: 100%, 25%, and Summary. Performance was measured in terms of compliance time below a participant-specific vocal intensity threshold.
All participants exhibited a significant increase in compliance time (Cohen's d = 4.5) during biofeedback days compared with baseline days. The Summary feedback group exhibited statistically smaller performance reduction during both short-term (d = 1.14) and long-term (d = 1.04) retention days compared with the 100% feedback group.
These findings suggest that modifications in feedback frequency and timing affect retention of a modified vocal behavior in daily life. Future work calls for studying the potential beneficial impact of ambulatory voice biofeedback in participants with behaviorally based voice disorders.
门诊语音生物反馈有潜力通过针对治疗会话之外期望行为的迁移（即保持）来显著提高语音治疗效果。本研究应用运动学习概念（降低频率和延迟的总结性反馈），这些概念已证明可提高保持率，并将其应用于门诊语音监测，以训练护士在工作时间轻声说话。
48名嗓音正常的护士佩戴语音健康监测仪（Mehta、Zañartu、Feng、Cheyne和Hillman，2012年）6天：3天基线期、1天生物反馈期、1天短期保持期和1天长期保持期。参与者被整群随机分为3个不同的生物反馈组：100%组、25%组和总结组。根据低于参与者特定嗓音强度阈值的依从时间来衡量表现。
与基线期相比，所有参与者在生物反馈期的依从时间均显著增加（科恩d值 = 4.5）。与100%反馈组相比，总结反馈组在短期（d = 1.14）和长期（d = 1.04）保持期的表现下降在统计学上更小。
这些发现表明，反馈频率和时间的改变会影响日常生活中改变后的嗓音行为的保持。未来的工作需要研究门诊语音生物反馈对基于行为的嗓音障碍参与者的潜在有益影响。
